Oracle 1z0-062 Exam Dumps

Oracle Database 12c: Installation and Administration

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Exam Code	1z0-062
Exam Name	Oracle Database 12c: Installation and Administration
Questions	379 Questions Answers With Explanation
Update Date	04, 20, 2026
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Demo Questions

Question # 1

Identify two prerequisites for configuring Enterprise Manager Database Express (EM Express).

A. Grant the APEX_PUBLIC_USER role to the SYSMAN user. 
B. Use the DBMS_XDB_CONFIG.SETHTTPPORT procedure to configure a port number for Oracle HTTP Server. 
C. Install Oracle HTTP Server. 
D. Configure at least one dispatcher for the TCP/IP protocol. 

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Question # 2

Examine the parameters: Your database instance is started with a PFILE. You want to increase the size of the buffer cache. Free memory is available to increase the size of the buffer cache. You execute the command: SQL> ALTER SYSTEM SET DB_CACHE_SIZE=1024M; Which is the outcome?

A. Change is applied to the current instance, but does not persist after instance restart. 
B. The value is changed only in the PFILE and takes effect at the next instance startup. 

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Question # 3

Which two statements are true about initialization parameter files? (Choose two.)

A. A lost or damaged SPFILE can be re-created by using the parameter values listed in the alert log.
 B. A PFILE must exist for an SPFILE to be created.
 C. The ALTER SYSTEM command cannot be used to change the value of any parameter if a database instance has started using a PFILE.
 D. Both the SPFILE and PFILE must always reside on a file system accessible from the database host server.
 E. On startup, by default a database instance always first searches for an SPFILE, and if it does not find any, searches for a PFILE. 

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Question # 4

Which two options can be configured for an existing database by using the Database Configuration Assistant (DBCA)? (Choose two.)

A. Configure Label Security 
B. Database Vault in ORACLE_HOME 
C. Oracle Suggested Backup Strategy 

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Question # 5

The performance of your database degrades between 11:00 AM and 3:00 PM. Automatic Workload Repository (AWR) snapshots are collected on an hourly basis. What is the most efficient way of diagnosing this problem? 

A. Create a custom ADDM task for the period defined by the snapshots taken between 11:00 AM and 3:00 PM.
B. Analyze the latest Automatic Database Diagnostic Monitor (ADDM) report.
C. Analyze the hourly ADDM reports generated between 11:00 AM and 3:00 PM. 

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Question # 6

Which three functions can be performed by the SQL Tuning Advisor? (Choose three.)

A. recommending creation of indexes based on SQL workload
B. recommending restructuring of SQL statements that have suboptimal plans
C. checking schema objects for missing and state statistics
D. recommending optimization of materialized views E. generating SQL profiles

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Question # 7

Automatic Shared Memory Management is enabled for your database instance. You notice that there are SQL statements performing poorly because of repeated parsing activity. Which action generates recommendations to overcome the performance issues?

A. running the Memory Advisor for the buffer cache 
B. running the Memory Advisor for the library  
 C. running the Memory Advisor for the SGA

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Question # 8

Which three statements are true about the Pre-Upgrade Information Tool? (Choose three.)

A. It clears all user recycle bins in a database and releases their storage space. 
B. It writes a list of invalid SYS and SYSTEM object to the registry$sys_inv_objs table. 
C. It evaluates the dependencies of network utility packages. 
D. It identifies any deprecated and unsupported parameters. 

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Question # 9

Which background process does Automatic Shared Memory Management use to coordinate the sizing of memory components?

A. PMON
B. SMON
C. MMNL 
D. MMAN
E. MMON 

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Question # 10

One of your databases has archive logging enabled and RMAN backups are taken at regular intervals. The data file for the USERS tablespace is corrupt. Which command must you execute before starting the recovery of this tablespace?

A. STARTUP FORCE 
B. ALTER TABLESPACE users OFFLINE IMMEDIATE; 
C. SWITCH DATAFILE ALL; 
D. ALTER TABLESPACE users OFFLINE NORMAL; 
E. ALTER TABLESPACE users OFFLINE TEMPORARY; 

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Question # 11

What should you do for a Scheduler to start a job when a file arrives on a remote system?

A. Start an Oracle database instance on the remote system and register the Scheduler agent with this database.
 B. Install the Scheduler agent on the remote system and register the agent with the database on the local system.
 C. Ensure dedicated server is enabled on both the local and remote databases.
 D. Shutdown the file watcher on the local system. 

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Question # 12

You plan to install the Oracle Database 12c software. You want to use Oracle Automatic Storage Management (ASM) for storage and Oracle Restart for managing components. Oracle Grid Infrastructure for a Standalone Server is already installed on the server.   Which three statements must be true for successful installation of the Oracle Database 12c software? (Choose three.)

A. The OSBACKUPDBA, OSDGDBA, and OSKMDBA OS groups must be created.
 B. An operating system OSDBA group must be created for users with the SYSDBA system privilege.
 C. The Oracle Database 12c software owner and the Oracle Grid Infrastructure owner must belong to the same Oracle Inventory Group.
 D. The Oracle Database 12c installation must have a separate Oracle inventory directory
E. An operating system OSOPER group be created for users with the SYSOPER system privilege.

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Question # 13

In which three situations can you use threshold server-generated alerts to helpdiagnose and fix problems? (Choose three.)

A. when free space in a locally managed tablespace falls below a specified percentage
B. when the number of logons per second exceeds a specific value
C. when a resumable statement is suspended
D. when the total number of locked user account exceeds a specific value
E. when the total number of logons exceeds a specific value
F. when free space in a dictionary managed tablespace falls below a specified percentage

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Question # 14

Which two tasks must you perform before you begin the upgrade process to Oracle Database 12c? (Choose two.)

A. Put all readonly tablespaces in read write mode
 B. Recompile all invalid objects
 C. Set the compatible parameter to 12.1.0.1
 D. Gather dictionary statistics
 E. Empty all user recycle bins 

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Question # 15

A PFILE exists for your database. You want to increase the value of the PROCESSES parameter from 300 to 400 and make it persistent for your database instance.  You plan to use the ALTER SYSTEM command.  Which two methods can be used? (Choose two.)

A. Edit PFILE manually, re-create the SPFILE from the edited PFILE, and restart the database instance by using the SPFILE.
 B. Create an SPFILE, start the database instance by using the SPFILE, and then execute the ALTER SYSTEM SET PROCESSES=400 SCOPE=SPFILE command.
 C. Create an SPFILE, start the database instance by using the SPFILE, and then execute the ALTER SYSTEM SET PROCESSES=400 SCOPE=DEFERRED command. 
D. Create an SPFILE, STARTUP MOUNT the database instance by using the SPFILE, and then execute the ALTER SYSTEM SET PROCESSES=400 command.
E. Start the database instance by using the PFILE, and then execute the ALTER SYSTEM SET PROCESSES=400 SCOPE=BOTH command.
F. Use the PFILE to STARTUP MOUNT the database instance, and then execute the ALTER SYSTEM SET PROCESSES=400 command. 

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Question # 16

Which statement is true about unified auditing? 

A. The unified audit trail, by default, resides in a read-only table in the AUDSYS schema in the SYSAUX tablespace.
B. Only the CREATE, ALTER, and DROP statements are audited for all users, including SYS.
C. Unified auditing is enabled only if the AUDIT_TRAIL parameter is set to NONE

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Question # 17

Your database is configured in ARCHIVELOG mode, and daily full database backups are taken. RMAN is configured to perform control file autobackups.   Which statement is true about the loss of a duplexed control file?

A. The database remains open but transactions are not permitted.
 B. The database instance aborts, and media recovery is required after restoration of the control file to open the database.
 C. The database instance remains open and the control file can be restored without shutting down the database.
 D. The database instance aborts and a control file restore operation does not require media recovery.

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Question # 18

In your database, the STATISTICS_LEVEL parameter is set to TYPICAL and an Automatic  Workload Repository (AWR) snapshot is taken every 30 minutes.   Which two statements are true about the Automatic Database Diagnostic Monitor (ADDM)? (Choose two.) 

A. It measures database performance by analyzing the wait time and CPU time of all non-idle user sessions.
 B. It always compares the latest snapshot with the baseline snapshot for analysis.
 C. It runs after each AWR snapshot is created and it requires at least two snapshots for analysis.
 D. It requires at least four AWR snapshots for analysis.
 E. It calls other advisors if required, but does not provide recommendations about the advisors to be used.

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Question # 19

Which two statements describe the relationship between a scheduler window, a resource manager plan, and a job class? (Choose two.)

A. A scheduler window together with a job class, controls resource allocation for a job using that job class in that scheduler window.
 B. A job class specifies a scheduler window that will be open when that job class becomes active.
 C. A scheduler window specifies a resource manager plan that will be activated when that scheduler window becomes active.
 D. A scheduler window specifies a job class that will be activated when that scheduler window becomes active.
 E. A scheduler window can control resource allocation by itself. 

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Question # 20

The HR schema exists in two databases, BOSTON and DENVER, and has the same password, HR.You have the CREATE DATABASE LINK and CREATE SESSION privileges on both the database.BOSTON is defined as a service name in the tnsnames.ora of both the databases.You plan to use the command: CREATE DATABASE LINK hr_link CONNECT to hr IDENTIFIED BY hr USING 'denver'; What must be done to ensure only the HR user in the BOSTON database can access the HR schema in the DENVER database? 

A. Execute this command as HR user in the BOSTON database and SYS user in the DENVER database.
 B. Execute this command as SYS user in both the databases.
 C. Execute this command as HR user in the DENVER database.
 D. Execute this command as HR user in the BOSTON database. 

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Question # 21

Which two tools can be used to configure static service information in the listener.ora file? (Choose two.) 

A. Oracle Net Manager
 B. Oracle Enterprise Manager Cloud Control
 C. Oracle Net Configuration Assistant
 D. Listener Control Utility (LSNRCTL)
 E. Oracle Enterprise Manager Database Express 

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Question # 22

Tape streaming is not happening while performing RMAN tape backup. On investigation, you find that it is not because of the incremental backup or the empty file backup and that RMAN is sending data blocks to tape drive fast enough.   What could be a solution to make streaming happen during the backup?

A. Configure backup optimization
 B. Configure the channel to increase MAXOPENFILES 
 C. Configure the channel to increase the capacity with the RATE parameter
 D. Configure the channel to adjust the tape buffer size with the BLKSIZE option 

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Question # 23

Which two utilities can NOT configure a new listener on port 1526? (Choose two.)

A. dbca
 B. asmca
 C. netca
 D. netmgr
 E. lsnrctl 

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Question # 24

You want to create a file watcher and an event-based job for detecting the arrival of files on the local server from various locations. To achieve this, you enable the raising of file arrival events from remote systems.   Which two conditions must be satisfied to receive file arrival events from a remote system? (Choose two.)

A. The remote system must have a running Oracle Database instance and a scheduler agent installed.
 B. The initialization parameter REMOTE_OS_AUTHENT must be set to TRUE on your database.
 C. The local database must be set up to run remote external jobs.
 D. The remote system's scheduler agent must be registered with your database.
E. Database links to remote databases must be created.

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Question # 25

Your database is in ARCHIVELOG mode and you want to automate the backup scheduling for your database.   Which two tools or utilities would you use to achieve this? (Choose two.)

A. Oracle Enterprise Manager Database Express (EM Express)
 B. Oracle Enterprise Manager Cloud Control
 C. Database Configuration Assistant (DBCA)
 D. Recovery Manager (RMAN) script invoked by using scheduler 

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